I, personally, prefer to use fruit woods, whether it be cherry, pear, apple or whatever. Usually use apple and have found it makes little, or no, difference if the wood is from a red delicious tree or a crab apple tree.
I also use hardwoods for smoking when I can get them (mostly hickory, maple and oak). I don't know that it makes any difference what "kind" of oak you use. As Gus said - if you have bur oak, use it.
BTW - Can't believe I agree with Gus !!!